Seismic body waves in anisotropic media: propagation through a layer |
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| Authors: | Colum M Keith Stuart Crampin |
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| Institution: | Department of Geophysics, University of Edinburgh, James Clerk Maxwell Building, Edinburgh EH9 3JZ;Institute of Geological Sciences, Murchison House, West Mains Road, Edinburgh EH9 3LA |
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| Abstract: | Summary. The square-root energy ratios and pulse shapes are presented for P, SV and SH waves transmitted through a layer of orthorhombic olivine between two isotropic half-spaces. Off incident planes of symmetry, incident P waves generate two small amplitude SH waves (one from each interface), whose amplitudes decrease slowly with increasing period. Incident SV (or SH ) waves can generate large amplitude SH (or SV ) waves which decrease rapidly with increasing period. For incident S waves, many pulses not present in isotropic models are generated, often of large relative amplitude, with many of the transmitted S pulses showing evidence of double arrivals, either in the form of S-wave splitting, or a modification of the shape of the input waveform. |
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